Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing dendriticnano-silver quickly and conveniently

A nano-silver and dendritic technology, which is applied in the field of quick and easy preparation of dendritic nano-silver, can solve the problems of limited synthesis scale at the laboratory level, restrictions on dendritic nano-silver, and harsh synthesis conditions, so as to achieve convenient and rapid preparation and avoid Low requirements for preparation and purification process and preparation environment

Pending Publication Date: 2019-06-07
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI +2
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing reports on the synthesis methods of dendritic nano-silver mainly include electrochemical methods and wet chemical methods, but these two methods either have relatively complicated operating procedures or harsh synthesis conditions, or are difficult to obtain in the subsequent purification process. These conditions greatly limit the preparation of dendritic nanosilver on a larger scale, and the synthesis scale of dendritic nanosilver is always limited to the laboratory level.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing dendriticnano-silver quickly and conveniently
  • Method for preparing dendriticnano-silver quickly and conveniently
  • Method for preparing dendriticnano-silver quickly and conveniently

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 1g of silver nitrate, 4g of polyvinylpyrrolidone with a molecular weight of 3500, 3mg of sodium chloride and 100g of ethylene glycol into a 200mL two-necked flask, stir and heat at 90°C for 1 hour, and then react at 130°C for 3 hours. After the reaction is stopped, the reaction liquid is naturally cooled, settled with acetone, diluted three times with 1% by weight polyvinylpyrrolidone aqueous solution, and finally prepared into a dispersion liquid with ethylene glycol for use.

Embodiment 2

[0025] Add 10g of silver nitrate, 30g of polyvinylpyrrolidone with a molecular weight of 8000, 20mg of sodium chloride and 1000g of ethylene glycol into a 2L two-necked flask, stir and heat at 80°C for 1.5 hours, and then react at 120°C for 2.5 hours. After the reaction is stopped, the reaction liquid is naturally cooled, settled with acetone, diluted three times with 1% by weight polyvinylpyrrolidone aqueous solution, and finally prepared into a dispersion liquid with ethylene glycol for use.

Embodiment 3

[0027] Add 4g of silver nitrate, 7.2g of polyvinylpyrrolidone with a molecular weight of 40,000, 10mg of sodium chloride and 400g of ethylene glycol into a 1L two-necked flask, stir and heat at 100°C for 0.5 hours, and then react at 150°C for 2 hours , after stopping the reaction, after the reaction liquid is naturally cooled, it is settled with acetone, then diluted three times with 1% by weight polyvinylpyrrolidone aqueous solution, and finally prepared into a dispersion liquid with ethylene glycol for use.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of chemical synthesis, and discloses a method for preparing dendritic nano-silver quickly and conveniently. The method for preparing the dendritic nano-silver quickly and conveniently comprises the following steps that (1) polyvinylpyrrolidone, silver nitrate and sodium chloride are blended, dissolved in ethylene glycol, and uniformly stirred and mixed; (2) a piecewise heating reaction is conducted on the blended liquid being uniformly stirred and mixed in the step (1), reaction liquid obtained after the reaction is completed is purified, and the dendritic nano-silver is obtained. According to the method for preparing the dendritic nano-silver quickly and conveniently, tedious and complex preparation and purifying technologies in traditional preparation methods are avoided, requirements on the preparation environment are low, and the dendritic nano-silver can be prepared conveniently and quickly.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, in particular to a method for rapidly and conveniently preparing dendritic nano-silver. Background technique [0002] Because of its unique electrical and optical properties, nano-silver materials have been used in many electronic materials and electronic components and equipment in recent years. Among them, nano-silver particles are mostly used in antibacterial materials and conductive adhesives, and nano-silver wires are mostly used. In the transparent conductive film, the dendritic nano-silver, as a one-dimensional nano-material, not only has the characteristics of nano-silver wire bridging each other, but also has a unique topological structure, which can improve the connectivity rate of the nano-material in the conductive connection, avoiding the Nano-silver wires need to adjust the intersecting way of silver wires to improve the electrical conductivity when forming a film. This feature mak...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B22F9/24B22F1/00B82Y40/00
Inventor 胡继文张培魏彦龙涂园园林树东欧明黄振祝胡美龙
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com